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A. H. LORENZE.

FLOORING POR BALGONIES.

No. 340,796. Patented Apr. 27, 1886.

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' u m mi .JZ/66@iz wenfoy: C l .Mmm we/w@ UNITED STATES ALBERT H.LORENZE,

PATENT OFFICE.

OF NEW YORK, N. Y.

FLOORING FOR BALCONIES.

SPECIFICATION forming part of Letters Patent No. 340.796, dated April27, 1886.

Application filed September 10, 1885.

To all whom it may concern:

Be it known that I, ALBERT H. LOEENZE, of the city, county, and State ofNew York, have invented a new and useful Improvement in Flooring forBalconies; and I do hereby declare that the following is a full andexact description thereof, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon, making a partof this specification.

My invention relates to an improvement in the construction of gratingsfor thc flooring of balconies and other purposes; and it has for itsobject to reduce the cost and increase th strength thereof.

In the accompanying drawings, Figure l is a longitudinal section throughone of the longitudinal bars of the improved Aflooring or grating inline m x of Fig. 2; Fig. 2, a plan view of the flooring or grating withthe cross-bars in horizontal section in line y y of Fig. l; Fig. 3, acentral section through one of the cross bars on line z cof Fig. 2, andFig. 4 a view in perspective illustrating a balcony t-ted with theflooring.

In the customary mode of constructing metallic gratings to serve as aiooring for the balconies of fire-escapes and windows, or for anypurpose where iron slats or bars are fastened together, the longitudinalbars are each riveted to a series of crossbars, both sets of bars beingmade of wrought-iron and each riveted to the other at every point ofintersection. This frequent riveting is required in order to obtainproper stability and strength in the structure and to prevent the barsfrom springing apart.

My invention consists in the combination of the customary form ofwroughtiron longitudinal bars A A A, with cross-bars B B B, castpreferably in malleable iron, and which are formed with transverseapertures d d therein, (see Fig. 3,) through which the longitudinallbars are passed, so as to avoid the necessity of rivets to confine theone to the other. The

end bars, C C O, are also cast, preferably, of malleable iron withrecesses or sockets e e e therein, (see Figs. l and 2,) adapted toreceive and confine the ends of the longitudinal bars. In constructing aooring with these wrought- `iron bars and malleable or cast ironcastings the longitudinal bars A A A, after being cut of the properuniform length, are inserted through the openings in a suitable numberof cross-bars, B B B, and at either end into the sockets in the endbars, C C. After theintervals between the cross-bars B B have beenproperly spaced and the positions of the bars adj usted, the whole ismade fast and the frame or flooring rendered secure and solid byriveting the ends of the crossbars and end bars to the outerlongitudinal bars, as shown at i it in the drawings.

The substitution of the malleable or cast iron cross-bars for those madeof wroughtiron, their construction with mortises d d and sockets e e, toserve instead of rivets for conining the bars led through them, and thefacility and rapidity with which the fiooring or grating is framedtogether and then made fast by a few outer rivets, it', enables me tofurnish it at a less lcost and in quicker time than any metallicflooring of equivalent strength heretofore manufactured.

I claim as my invention- A metallic grating or flooring constructed of aseries of longitudinal bars led through apertures in a series ofcross-bars, and which are fitted at each end into sockets in the endbars, the whole made fast by rivets pinning the two outer longitudinalbars to the end and cross bars, substantially in the manner and for thepurpose herein set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALBERT H. LORENZE.

Witnesses:

J. F. AcKER, Jr., A. B. MooEE.

